Needle-cutter.



S. 0. WADE. NEEDL E CUTTER.

APPLICATION FILED FEB. 28. I916.

1 ,1 86,628 I Patented June 13, 1916.

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SAMUEL 0. WADE, OF CHICAGO, ILLINOIS.

NEEDLE-CUTTER.

Application filed February 28, 1916.

To aZZ whom it may concern.-

Be it known that I, SAMUEL O. TADE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Needle-Cutters, of which the following is a specification.

My invention relates to needle cutters for repointing fiber needles for phonographs.

In my device there is a pair of pivoted arms in the form of a pair of pliers and the repointing mechanism is mounted at the end of the jaws.

The object of my invention, considered in its general aspect, is to improve the holding and cutting means and the manner of mounting them upon the jaws of the device.

Among the more specific objects of the in vention, it is my purpose to provide a simple and advantageous form of connection between the cutting blade and the jaw which operates it.

I accomplish myobjects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of an assembled device embodying my invention. Fig. 2 is an end view on an enlarged scale looking toward the right in Fig. 1. Fig. 3 is a top view of the parts omitting the outer ends of the handles. Fig. 4 is a sectional view on the line 4-4, Fig. 3. Fig. 5 is a sectional view on the line 55, Fig. 4:. Fig. 6 is a perspective view from the inside showing the face plate, needle holder, and cutting blade. Fig. 7 is a perspective view from the outside showing the needle stop, the spring which presses upon the blade to keep it to its work, and a fragment of the jaw upon which the parts are carried. Fig. 8 is a perspective view of the cutting blade and a fragment of the jaw upon which it is carried. v

Similar numerals refer to similar parts throughout the several views.

The pliers consist of two handles 1 and 2 pivoted upon the pin 3, the handle 1 terminating in front of the pivot with the lower jaw 4 and the handle 2 terminating in front of the pivot with the upper jaw 5. A stop 6 mounted in the present case upon the lower jaw, prevents the jaws from being brought. too close together. As shown in Fig. 4, this stop is mounted upon a cross bar 7 extending between the two sides of the lower jaw and engages the cross bar 8 ex- Specification of Letters Patent.

Patented June 13, 1916. Serial No. 80,803.

tending between the two sides of the upper jaw. A spring 9 urges the handles and jaws to open position. The parts thus far de scribed, constitute an ordinary plier usable for various purposes and the design may be considerably altered without departing from the spirit of the invention.

Rigidly fastened to the lower jaw, preferably by means of two integral wings 12, 12, is a plate 13 which with the cap l t forms a needle holder for holding the needle 15 while the cut is being taken. A face plate 18 is fastened by a screw 19 or other means to the inside of the work holder plate 13 and this has an aperture 20 through which the inner end of the needle reaches to the knife blade 21 when the cut is being taken. The needle is prevented from projectin too far through the aperture 20 by a neecIle stop 22 which is best shown in Figs. ,1, 4: and 7. This stop is rigidly secured to the cross bar 8 and is resilient so that it may always make close contact with the back of the face plate. The knife blade makes sliding contact with the inside surface of the face plate and at its upper end has an in wardly extending arm 24 having laterally projecting pins 25 at its inner end. These pins slide in slots 26 extending longitudinally in the two sides of the upper jaw 5 as clearly shown in Fig. 8 and elsewhere. A plate 28 is secured by means of a screw 29 or other means to the outer surface of the face plate as best shown perhaps in Figs. 4% and 6. This plate is provided with marginal guides 30 which extend around over the edges of the face plate and behind part of the blade, thereby guiding the blade in its movement up and down on the face plate. By preference, this plate is formed of sheet metal and has an integral stop 31 at the top, which extends inward over the top of the blade and limits the upward movement of the blade. The blade is held with substantially uniform pressure upon the inner surface of the face plate by means of a spring 38. As shown in perspective in Fig. 7 this spring fits overthe top of the stop 22 and has a clip 84 at its inner end by which it engages the inner edge of the cross bar 8 and enables this piece to be sprung into place, after which it maintains its own position in the structure.

In operation, when the operator presses the handles together, he causes the jaws 4 and 5 to approach each other, thus causing path of travel,

the cutting blade to descend. The jaws approach each other upon the arc of a circle and the face plate and needle holder are rigidly fastened to thelower jaw. Therefore, as the upper jaw and cutting blade descend, the pins 25 on the blade travel inwardly along the longitudinal slots 26 in the upper jaw. Thus the upper jaw furnishes the power for driving the blade throughthe needle to shave off the end of the needle and at the same time permits the blade'to shift its position longitudinally of the upper jaw, or perhaps more accurately stated, permits the upper jaw to shift relatively to the blade; for the blade being guided in ways which arefixed relatively to the lower jaw can move only in its fixed which path never changes its angle of inclination'relatively to the face plate, work holder or lower jaw. ll his construction is at once efficient and simple. It becomes unnecessary to actually fasten the blade to the upper jaw and consequently the configuration of the blade is simplified, and fastening devices, such as pivot plus and the like which might be otherwise necessary to fasten the blade to the upper jaw, are entirely dispensed with.

As a result of this construction, not only are the parts simple to manufacture, but they are assembled with great readiness and hence materially reduce the cost of production.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A needle cutter having a pair of pliers provided on one jaw with a needle holder, the remaining jaw being slotted, and a blade traveling across the end of the needle holder and projecting into the slots in the slotted jaw whereby the jaw is capable of actuating the blade and at the same time relative movement between the blade and the slotted jaw is permitted.

2. A needle cutter having a pair of pliers, a needle holder mounted on one jaw of said pliers, and a cutting blade traveling relatively to said needle holder, the remaining jaw of the pliers being longitudinally slotted and the blade having pins projecting laterally into the slots in the slotted jaw.

8. A needle cutter comprising a pair of pliers, a needle holder rigidly secured to the lower jaw of the pliers, a face plate having an aperture opposite to the inner end of the needle holder, a cutting blade traveling in contact with the inner surface of said face Copies of this patent may be obtained for upon the inner plate to shave off the dle, the upper jaw of the pliers being formed in two parallel parts, each of which is longitudinally slotted, and the blade havinner end of the nee- V ing outwardly projecting pins extending l. In a needle cutter, the combination of a pair of pliers, a needle holder rigidly fastened to the lower jaw of the pliers, a face plate having an aperture opposite to the inner end of the needle holder, said face plate being rigid with respect to said work holder and lower jaw, a blade traveling upon the inner surface of said face plate, the blade being articulately connected to the upper jaw, and a stop fastened to "said face plate and'projecting over the upper end of the blade to limit the upward travel thereof.

5. In a needle cutter, a pair of pliers, a face plate rigidly fastened to the lower jaw of said pliers, said face plate having an aperture through which the inner end of the needle projects, a cutting blade sliding having integral guides extending around the edges of the face plate and of the blade-for surface of said face plate, a guide plate fastened'to said face plate andhold it in close contact with and having a longitudinal slot in each branch, a needle holder rigidly connected to the lower jaw of thepliers, aface plate cooperating with said needle holder, a guide plate fastened to said face plate, a cutting blade traveling on the inner surface of'said face plate, said blade havingv pins extending outwardly into the slot in the upper jaw, a cross bar extending across from one branch of the upper jaw to the other, a spring mounted on ing up the blade, mounted on said cross bar, inward movement of the needle in the work holder.

In witness whereof, I have hereunto subscribed my name.

and a needle stop also SAMUEL o. WADE.

five cents each, by addressing the Commissioner of Patel",

' Washington. D. 6.2 s

for limiting the said cross barfor back- 

